Phonograph



Feb. 4, 1930. w. w. MCLAREN i v1,745,551

- v PHONOGRAPH' I Filed April 22. 1927 v s Sheet-Sheet 1 gwmmtoz I Feb. 4, 1930. w. w. McLAREN 1,745,551

' PHONOGRAPH 4 Filed April 22. 1927 a Sheets-Sheet 2 N Z gmmtu 7/ IKMZZWQM 1 a W I .1:

Feb. 4, 1930. w. w. MOLAREN PHONOGRAPH Filed April 22, 1927 v 3 Sheets-Sheet r I J 25ytrl10t8d inacc-ordance with the invention;

Patented Feb. 4, 1930 .IPAITENT OFFICE I igu ,ST-ATES WILLIAM-1W. McLAB-EN, or BIRMINGHAM, ALABAMA PHONOGRAPH Application filed April 22 means whereby right line movement between a stylus and a cylinder record willrbe brought about, as the record rotates, a continuous JigI'OOVG thus being formed, so that, without shifting'the stylus by hand, a selection on the record may be played over and over, as the record is rotated. I

It-is within the province of the disclosure 1 to improvegenerally and to enhance the utility of devices of that type to which the invention appertains.

With the above and other objects in View which will appear as the description pro- ;ceeds, the invention resides in the combination andarrangem'ent of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the zaiinvention herein disclosed may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings Figure 1 shows in elevation, a device con- Figure 2 is a top plan;

Figure 3 is a plan showing a modification;

Figure 4 is a section on the line 44 of Figure 3. A i

Referring to Figures 1 and 2, there is shown a frame or casing 1, on which are mounted bearings 2 and 3. A shaft 4 is journaled in the bearings 2 and 3 and may be provided with a pulley 5, adapted to re- ;;ceive a belt 6, driven, if desired, by a motor not shown) within the frame 1. The shaft '4 hasa worm 7 meshing with a worm wheel 8 that is connected to a mandrel 9, the mandrel being supported for rotation in a bracket 40.10 on the frame 1. v

Tracks 11 are carried by the frame 1, a carriage 12 being mounted for reciprocation on the tracks. The carriage 12 is provided with a sound amplifier 14, such as a horn, where- "?unto a tone arm 15'is pivoted as shown at 16, the tone arm carrying a sound box 17 provided with a stylus 18 adapted to move along f a cylindrical record 19, either for the purpose of recording or for the purpose of reproduc- I fioiing. A link 20 is pivoted at21 to the carriage 1927. Serial No. 185,778.

12 and is pivoted at 22 to an arm 23 on a shaft 24 j ournaled in the bearing 3, the shaft 24 being connected with the shaft 4 by means of intermeshing beveled gears 25. A

In practical operation, when the shaft 4 is 55, rotated, the worm, 7 and the worm wheel 8 rotate the mandrel 9 and the record 19. By means of the beveled gears 25, rotation is imparted from the shaft 4 to the shaft 24,

and the arm 23, operating through the link 20, will impart sliding movement to the carriage 12, and parts carried thereby, the carriage 12 moving on the tracks 11, and the stylus 18 travelling along the cylinder record 19, longitudinally of the record, as the record 65. is rotated; The recording process may be continued until the entire surface of the record 19 is covered with longitudinal sound grooves which communicate at their ends, as shown at 26. As a consequence,the stylus 18 will continue to ride in the sound grooves, without interruption, as long as the record 19 is rotated, it being unnecessary to shift the stylus 18 by hand, the operation of the device being continuous, so far as sound reproduction is concerned. I

In Figures 1 and 2 of the drawings, there is shown a structure wherein the desired operation is brought about by moving the horn 14 and the stylus 18 longitudinally of the 0 cylinder 19. It is possible, however, to mount the horn stationarily, and move the record in the directionof its length, as the record rotates. One device embodying this feature of operation is shown in Figures 3 and 4 of the drawings.

The numeral 27 marks a frame or casing casing a T-shaped standard 28 supporting tracks 29 at one end, the opposite ends of the tracks being mounted in spaced brackets '30 on the casing 27. A hearing frame 31 is mounted for reciprocation on the tracks 29 and is provided at one end with a hinged keeper 32 held closed by a latch 33. A man.- drel 34 is located within the contour of the hearing frame 31 and is adapted to carry a cylinder record 35, it being possible to open the keeper 32, in order to permit the record 35" to beplaced on the mandrel'34 and to permit the record to be removed from the 10 bearing and in the standard 28. The shaft 38 has a portion 39 which is squared or constructed otherwise so that when rotation is imparted to the shaft 38, the mandrel 34 will be rotated also, it being possible, nevertheless,

for the mandrel 34, to slide longitudinally of the shaft, the squared part 39 of the shaft, the present instance, being received slidably, but against rotation, in the part '36 of the mandrel 34. A worm wheel 41 is mounted on the shaft 38 and meshes with a worm 42 on a shaft 43 supported for rotation in bearings 44 on the casing 27. At one end, the shaft 43 has a pulley 45 engaged by a belt 46 driven by a motor (not shown) housed within the casing 27, if desired. Theshaft 43 is supplied at one end with a crank arm 47, whereunto a link 48 is pivoted at 49, thelink being pivoted at 50 to the bearing frame 31.

The sound amplifier or horn 5l is supported at 52 on the casing 27. The tone arm 53 is pivotally mounted at 54, and carries the stylus 55 that forms the sound groove on the record 35, and, as in Figure 1, may be used either for recording or reproducing. I In practical operation, when the shaft 43 is rotated by the pulley 45 and the belt 46, or an equivalent mechanism, the worm 42' cooperates with the worm wheel 41, rotates the shaft 38, and the squared portion 39 of the shaft, coperating with the ournal 36 of the mandrel 34, rotates the mandrel and the record 35. When the shaft 43 is rotated, the

crank arm 47 and the link 48 cooperate to move the bearing frame 31, the mandrel 34, and the record 35, in the direction of the length of the record, the bar 36 of the mandrel sliding on the squared portion of the shaft 38. The result produced by the operation of this form of the invention, does not differ l materially from the results produced in connection with the form shown in Figures 1 and 2, either as regards recording or reproducing.

What is claimed is 1. In a machine of the class described, a

record carrier supported for rotation on an axis, a stylus, means for producing relative right-line movement between the stylus and the record carrier through a predetermined distance longitudinal of said axis, and means for rotating the carrier on said axis at sucha speed as'to produce relative movement'between the stylus and the carrier, circumferentially of the carrier, through a much shorter distance.

2. In a machine of the class described, a

stylus, a-record carrier, means for imparting right-line sliding movement to the record carrier through a predetermined distance With respect to the stylus, and means for rov tating the carrier at such a speed as to produce relative movement between the stylus and the carrier, circumferentially of the carrier, through a much shorter distance,

3. In a machine of the class described, a

track, a bearing frame mounted for right line sliding movement on the, track, a record carrier journalle d in the frame, a' first shaft supported for rotation, the shaft and the record carrier being provided with interengaging elements which connect the shaft and the record carrier for rotation together and permit the record carrierto slide longitudinally of the shaft, a second shaft supported for rotation, a worm and pinion vconnection uniting the shafts operatively, an arm on the Y second shaft, a link pivoted to the arm and to the record carrier, a stylus, and means for holding the stylus in operative position with respect to the record carrier. 7

In'testimony that I claim the foregoing as my own, I have hereto afiixed my signature.

WILLIAM 'W. MOLABEN. 

